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Finding the Fourth Proportional to 18,574.25, 25,602.48 and 15,211.13

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Solution

The fourth proportional to 18,574.25, 25,602.48 and 15,211.13 is: 20,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.25 : 25,602.48 = 15,211.13 : x
  2. Step 2: Convert to fraction form
    18,574.25/25,602.48 = 15,211.13/x
  3. Step 3: Cross multiply
    18,574.25x = 25,602.48 × 15,211.13
  4. Step 4: Simplify right side
    18,574.25x = 389,442,523.59
  5. Step 5: Solve for x
    x = 389,442,523.59/18,574.25
  6. Step 6: Final answer
    x = 20,966.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.